I need to report 2 transactions for "items not received", I can only report one?

I need to report 2 transactions for "items not received", I can only report one?

Hi,

I bought some items from an online store and before they were due to arrive I decided to buy some more. That is, I made two different purchases from the same site. Neither of the orders arrived, and I see in my PayPal activity that the payments were sent to 2 different stores -one was the (actual?) store I initially made business with, the other is a new place to me.

I already reported one of the transactions as INR (items not received) and the dispute is open in my resolution center. However, when I try to report the other one I can only select "billing issue" and "unauthorized activity" as reasons. Can anyone tell me why?